The Shark Tank star hosted a party the day after his wedding for Liam Brenes, a 4-year-old boy whose prosthetic leg was stolen after swimming at Crystal Cove State Beach in Orange County with his family, People reports. Brenes was born without a fibula and his right leg amputated from below the knee when he was 1-year-old. The boy had been trying to protect his prosthetic leg while swimming in the salt water, and returned from his swim to find the leg missing.

After hearing this, Herjavec had offered to fund a replacement leg for Brenes, which is now Ghostbusters-themed, and has promised him a party to celebrate his new leg. The new groom filled the party with lots of excitement and surprises, including Ghostbusters toys, gifts, and an appearance by Noah Galloway, a double-amputee Iraq War veteran who competed against Herjavec and Johnson on Dancing With the Stars.

That isn't even all of the surprises that Herjavec has in store for Brenes! According to People, the Shark Tank star previously agreed to send Brenes on a special trip to Disneyland.

"We're going to arrange to have him to a VIP tour of Disney and get to go to the park and have some fun in life because it's good to have fun in life," Herjavec said.

This heartwarming story happened hours after Herjavec and Johnson said "I do" in a gorgeous Beverly Hills wedding. The bride wore a custom Monique Lhuillier gown while the groom wore a white and black tuxedo. The dancing couple even performed two first dances for their guests; the first was a traditional first dance to Etta James' "At Last," while the second was a group performance with the bridal party to LunchMoney Lewis' "Bills."

Herjavec and Johnson fell in love after meeting on the set of season 20 of Dancing With the Stars, and got engaged in March after a year of dating.